it has a 2" chamber that shrinks to 3/4" that leads to a 1" modded sprinkler(my first mod, yay!) and then to a 1/2" barrel. the only reason i have 3/4" pipe in there is because i couldn't find all the right parts to have it as 1". it has interchangeble barrel and chamber capabilities, almost all the parts are threaded but i teflon taped them so they shouldn't leak. if you actually read this please put a star(*) at the beginning of your response. i want to see who actually reads these things.
please tell me what you think!
i almost forgot: BCDF stands for Beta Carotene Deployement Facilitator(beta carotene is an ingredient fond in carrots and this gun was made for launching carrots)

the whole gun

just the valve






